[issue39336] Immutable module type can't be used as package in custom loader

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

commit 2528a6c3d0660c03ae43d796628462ccf8e58190
Author: Dino Viehland <dinoviehland at gmail.com>
Date:   Mon Jan 27 14:04:56 2020 -0800

    Add test.test_import.data.unwritable package to makefile (#18211)

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39336>
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